Finding the Fourth Proportional to 120,146.36, 180,101.84 and 66,863.75
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Solution
The fourth proportional to 120,146.36, 180,101.84 and 66,863.75 is: 100,230.12
Step by Step Solution
- Step 1: Write the proportion equation
120,146.36 : 180,101.84 = 66,863.75 : x - Step 2: Convert to fraction form
120,146.36/180,101.84 = 66,863.75/x - Step 3: Cross multiply
120,146.36x = 180,101.84 × 66,863.75 - Step 4: Simplify right side
120,146.36x = 12,042,284,404.30 - Step 5: Solve for x
x = 12,042,284,404.30/120,146.36 - Step 6: Final answer
x = 100,230.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.